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AlladinOne [14]
2 years ago
7

Do you think three weeks (21 days) is enough time to observe all of the Moon’s phases? Why or why not?

Chemistry
1 answer:
Zielflug [23.3K]2 years ago
6 0

Answer:

No, because the moon takes about 27 days to fully orbit which means that 3 weeks would not be enough to see all of the moon's phases, but if you think that you don't need 27 days due to the fact that some of the days there may not be a phase change then that is completely up to you.

Explanation:

Hope this helps:)...if not then sorry for wasting your time and may God bless you:)

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Calculate the average weight of the dogs listed in the chart below.
pishuonlain [190]

Answer:

19

Explanation:

Once you add all the weights together, you end up with 114 then you divide it by how many dogs there are, 6. 114/6 = 19. The average is 19 lbs.

3 0
3 years ago
Why are bacteria necessary for life on Earth to exist? Select three options.
gladu [14]

Answer:

Bacteria decompose rotting plant animal material.

Explanation:

Theres good bacteria, and theres bad bacteria. some helps, and some makes things worse. so really, in some sense all of the above.

Hope that helps.

4 0
3 years ago
Read 2 more answers
I need half reactions, for the following equation.
zhuklara [117]
Answer : Half reaction is defined as the reaction which will be <span>either the oxidation or reduction </span>reaction<span> of particular species in a given redox </span>reaction<span>.

So as per the definition in the reaction of,

</span>Ba + ZnSO_{4}  ----\ \textgreater \  BaSO_{4}  + Zn
<span>
</span>Ba_{(s)} + Zn ^{+2} + SO_{4}^{-2} = Ba^{+2} + SO_{4}^{-2} + Zn_{(s)}
<span>
here on left and right side </span>SO_{4}^{-2} will get cancelled.

and we will get, Ba_{(s)} + Zn ^{+2}  = Ba^{+2} + Zn_{(s)}

Here, 
Ba_{(s)} ----\ \textgreater \  Ba^{+2} - 2e^{-} ...this is oxidation reaction as Ba is getting reduced to Ba^{+2} by losing 2 electrons.

whereas,on the other hand,  Zn ^{+2} ----\ \textgreater \  Zn_{(s)} + 2e ^{-}...this is reduction reaction as Zn ^{+2} is getting reduced to Zn by gaining 2 electrons.

8 0
3 years ago
Draw the structure of the major organic product isolated from the reaction of 1-hexyne with sodium amide in liquid ammonia follo
77julia77 [94]

Answer:check explanation and attached file/picture

Explanation:

Alkynes are hydrocarbons and they are very acidic because of hybridization effect(the more acidic the s-character is, the more acidic it is going to be).

The reaction of 1-hexyne with sodium amide in liquid ammonia is a form of deprotonation 'reaction' to form acetylide. Due to the acidic nature of the terminal hydrogen atom, terminal alkynes do form metallic derivatives by the replacement of the terminal hydrogens. The equation of Reaction is given below.

C6H10 + NaNH2( in liquidNH3) ------------> C6H9Na + H-NH2.

The acetylide is a bae and a very good nucleophile.

The reaction is then followed by the addition of 1-bromobutane. This reaction is used for the production of longer chain alkynes. The equation of Reaction is attached in the picture.

3 0
3 years ago
Read 2 more answers
How does organic matter help soil?
sergeinik [125]

Answer:

C

Explanation:

the rain does help the soli it can make bacteria

7 0
3 years ago
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